How can I effectively manage events such as new customer registration, cart updates, and order postings in Salesforce Commerce Cloud (SFCC) B2C?

In Salesforce Commerce Cloud (SFCC) B2C, I expect to handle these events by using hooks and custom scripts within cartridges. Specifically, I want to know how to implement event listeners and handlers using SFCC’s script API to manage these events efficiently. For example, I am looking for guidance on using the Customer hook for new customer registrations and the Cart hook for cart updates. Additionally, I would like to understand best practices for ensuring optimal implementation, perhaps with the assistance of the best Salesforce consultant in the UK.